Grinding-machine



(No Model.) 2 Sheets-Sheet 1.

H. A. HAYWARD.

, GRINDING MACHINE. No. 535,949. Patented Mar. 19, 1895..

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donderry, in the county of Windham and State HORACE A. HAYWARD, OFLONDONDERRY, VERMONT.

MACHINE.

SPECIFICATION forming part oi Letters Patent No. 535,949, dated March19, 1895.

Application filed October 22, 1894.

To aZZ whom it may concern:

Be it known that I, HORACE A. HAYWARD, a citizen of the United States,residing at Lonof Vermont, have invented certain new and usefulImprovements in Grinding-Machines; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention relates to grinding machines for use in connection withmowing machine sections or sickles, guards, and other similar articles;and it consists in the novel construction and combination of the partshereinafter fully described and claimed.

In the drawings: Figure 1 is aside view of the grinding machine. Fig. 2is a front view of the grinding machine.

A is a stationary support which may conveniently be formed of wood.

B is a bracket secured to the support A. The .top portion of the bracketB rests on the support A and is provided with a split boss 19 havinglugs b, one on each side of its split or groove.

G is a vertically-adjustable and revoluble disk provided with a stem 0passing through the said boss 19; and O is a clamping screw, engagingwith the lugs b and provided with an operating handle or lever c, forsecuring the said disk in any desired position.

The rear portion of the bracket B is provided with a vertical guide D.

E is a bracket provided with a vertical slide e which is adjustable inthe guide D and is provided with a vertical slot 6.

F is a screw which passes through the slot e and screws into the bracketB, so that the bracket E may be clamped to it after its verticalposition has been adjusted. A horizontal circular disk E is provided atthe top of the bracket E.

G is a standard having a base g. This base has acircular recess g on itsunder side and is j ournaled upon the disk E. A screw H passes through ahole in the disk E and screws into the base g so that the standard isclamped to the bracket B when the said screw is tightened. A toothedwheel I is journaled on a engage the point of the guard.

Serial No. 526,587. (ITomodeLl sition is adjusted by raising or loweringthe bracket E; .and it is set to various angles by turning the standardupon the disk E.

K is a table which is secured to the disk 0 hereinbefore described, andk are removable rests-for the cutter bar. These rests have stems k whichare dropped into sockets m let into the table.

A support N is provided for grinding guards, as shown in the drawings.The support N is removable and is provided with a stem n which isjournaled in the socket 'n' which is let into the table. I

O is a revoluble bar which is free to slide horizontally in the lugs oof the support N. The bar 0 has a stationary vertical arm p at one endwhich is provided with a collar p. A slidable arm q is clamped on theother end of the bar 0 by a screw q, and the upper end of the arm q isprovided with a conicalrecess s. The guard is slipped over the end ofthe arm 19 and rests on the collar 19, and the arm q is moved so as tocause the recess 8 to The arm q is then secured to the bar 0. The guardis grasped by thehand and is slid back and forth and is pressed againstthe grinding wheel.

The pivotal and vertical adj ustability of the standard and tablepermits the grinding wheel and the articles to be ground to be movedabout into a great many positions with respect to each other, andpermits the machine to be used for grinding a large variety of articles.

What I claim is- 1. In a grinding machine, the combination, with thegrinding wheel, and means for supporting and revolving it; of theverticallyadjustable disk 0 and the table secured to it; and a supportfora guard provided with lugs and with a stem journaled in the table,and a horizontally-slidable bar journaledin the said disk at its top;the standard for supporting lugs and having astationary arm at one endthe grinding wheel and its driving mechanprovided with a collar, and aslidable arm at ism, provided with a recessed base revoluble I5 theother end provided with a recess, substanupon the last said disk; andclamping devices 5 tially as set forth. for securing all the saidadjustable parts, sub- 2. In a grinding machine, the combination, 1stantially as set forth.

with the bracket B provided with a vertical In testimony whereof I aflixmy signature guide at its rear; of the vertically-adjustable in presenceof two witnesses.

disk provided with a stem journaied in aboss HORACE A. HAY WARD. 10 atthe front of the said bracket; a vertically- Witnesses:

adjustable bracket provided with a slide en- F. N. WESTCOTT,

gaging with the said guide, and a horizontal B. SPARROW.

